It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center.
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@Juan Please add more details to your question. Once you have edited your question to include things like: the type of wireless card, the speeds you're getting, the speeds you anticipate, any errors you've received, or any other details pertinent to this question. Then flag the question or reply to this comment and it'll be reviewed for reopening!
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Marco Ceppi♦Oct 16 '11 at 18:17

1 Answer
1

Since your description isn't very clear, this solution might or might not work.

On laptops, when on battery Ubuntu reduces the power given to the WiFi radio to save battery. There's a way to force Ubuntu to not make this change and instead give full power to the radio. To do this, run these command while on battery: